\begin{tikzpicture}
	\tkzDefPoints{0/0/A, 4/0/B,  0/0.5/A1,  4/0.5/B1,  0/-0.5/A2,  4/-0.5/B2, 2/10/O}
	\tkzDrawPolygon(A,B,B1,A1)
	\tkzLabelSegment[right=1em](B,B1){甲}

	\tkzDrawArc(O,A)(B)
	\tkzDrawArc(O,A2)(B2)
	\tkzDrawSegments(A,A2  B,B2)
	\tkzLabelSegment[right=1em](B,B2){乙}
\end{tikzpicture}

